@karanga
That's a very pertinent question.
You're quite astute when it comes to noting important plot points to be used in creating a well crafted tale, aren't you.
It's interesting you see different forms of "mentorship" from Luida, to Sakuras mom, to Abby, etc. How does one achieve greatness in their art? Perhaps by the end of the manga, kanade'll end up where she started, with Luida in Japan.